Spinning and sealing process.



M. P; JANISCH. SPINNING AND SEALING PROCESS.

APPLICATION FILED JAN. H. 1915.

Patented Oct. 5, 1915.

auuntoz mill-mm wi'iwwomm MAXIMILLIAN P. JAN ISCH, OF MILWAUKEE,WISCONSIN, A SSIGNOR TO U. S. FIBRE BOTTLE MCHY. 00., OF MILWAUKEE,WISCONSIN, A CORPORATION OF WISCONSIN.

Specification of Letters Patent.

Patented Oct. 5, 1915.

Application filed January 11, 1915. Serial No. 1,566.

To all whom it may concern:

Be it known that I, MAXIMILLIAN P. J AN- ISCH, a citizen of the UnitedStates, residing at Milwaukee, county .of Milwaukee, and State ofWisconsin, have invented new and useful Improvements in Spinning andSealing Processes, of which the following is a specification.

My invention relates to improvements in processes for capping the endsof cylindrical or conical paper receptacles.

The object of my invention is to devise a process for putting in thebottoms of paper bottles or other receptacles, having a cylindrical orconical form, in which the operation of inserting and securing thebottom will be facilitated and the bottom securely attached to the sidewalls and hermetically sealed to such walls. A In the drawingsFigure 1is a side elevation, partly in section, of apparatus employed incarrying out my process and illustrating the initial step or stepsthereof. Fig. 2 is a similar View, illustrating another portion of myimproved process. Fig. 3 is a side elevation, partly in section,illustrating the means which Iemploy for folding the marginal portionsof the bottom and side walls of a bottle or other paper receptacle intointerlapping, interlocking and sealed rela-' tion. Fig. 4 is a similarview, illustrating the completion of that step in my process, tEheinitial portion of which is illustrated in Like parts are identified bythe same reference characters throughout the several views.

In carrying out'my improved process, I employ 'a pan A for hot paraffinor other sealing material, the same being kept hot by any suitablemeans, heating coils A being illustrated. The paraffin pan is preferablydivided into compartments a, a, the latter being provided with apedestal B. I form the side walls of my receptacles by rolling paperblanks into cylindrical or conical form and securing the marginstogether to form the members E, shown in Fig. 1, the upper margins ofthe blanks being connected with suitable mouth pieces E. I also formbottom members by compressing disk shaped paper or fibrous blanks intothe form of an inverted cup, thus providing a circular bottom C for myreceptacle, which has a downturned circular flange D. The pedestal B asupport for a series of bottom members and side wall members, as shown.

The bottom members are secured in position within the lower mar in ofthe side wall member E, as follows: ach member E is lifted and placed inthe compartment a with its lower margin immersed in the sealingmaterial. It is then lifted out of this compartment and forceddownwardly over a bottom member C, which has previously been placed uponthe pedestal B. The flange D will now lap upon the inner surface of themember E at its base. The member E will now be lifted and will carrywith it the bottom member, after which the lower margin of the member E,together with the flange D of the bottom member, will be folded inwardlyto form an interlapping joint, the folding operation being performedwhile the material is softened by the hot paraffin or other sealingmaterial, said sealing material being thus not only utilized tohermetically seal the joint, but to facilitate the foldingoperation bysoftening the paper or other fibrous material of which the recep heated,and convenient means for heating the same being provided by a gas burnerat G. v

I am aware that it is not new to fold the margins of the bottom and sidemembers. of paper receptacles together to form an interlocking lappedjoint, but I believe that I am the first to devise a process whichfacilitates such folding operations and also hermetically seals thejoint by performing the folding operation under the influence of heatand with the folding margins softened by a sealing material, whichpenetrates the fiber of which the separate receptacle is composed.

I claim 4 1. The process of inserting bottoms in paper receptacles,which consists1st, in softening the margin of the side Wall with aheated sealing material, and 2nd, inserting the bottom and interfoldingthe margins of the bottom and side Walls upon each other and pressingthem together while said sealing material is hot.

2. The. process of forming paper receptacles, which consists1st, inproviding bottom members having the form of an inverted cup and alsoproviding side Wall members having circular loWer margins adapted toreceive the cup shaped bottom members; 2nd, supporting said cup shapedbottom members; 3rd, immersing the lower margins of the side Wallmembers in a heated sealing material, and applying the same While hot tothe margins of the bottom members; and 4th, applying the interlappingmargins of the side and bottom members to a heated folding die, Whilesuch margins are softened by the sealing material, and utilizing saiddie to press and fold said margins upon eachother.

In testimony whereof I aflix my signature in the presence of twoWitnesses.

MAXIMILLIAN P. JANISGH. Witnesses:

LEVERETT C. WHEELER, IRMA D. BREMER.

